Street-sweeper.



No. 726.040.-" v PATENTED AP-R.L21, 190s. A FLEGHTHEIM.

STREET SWEEPER.

APPLICATION FILED FEB. 26, 1902.

2 SHEETSSHEBT 1.

. PATENTED APR. 21,1903. A; FLEGHTHEIMr STREET SWEEPER. APPLIOA'IIION FILED FEB. 26, 1902.

2 SHEETS-SHEET 2.

H0 MODEL.

UNITED STATES PATENT OFFICE.

ALFRED FLEOHTI-IEIM, OF DUSSELDORF, GERMANY.

STREET-SWEEPER.

SPECIFICATION formingpart of Letters Patent N 0. 726,040, dated April 21, 1903.

Application filed February 28, 1902. Serial No. 96,037. (No model.) I

T0 aZZ whom it may concern:

Be it known that I, ALFRED FLECHTHEIM, a citizen of the German Empire, and a resident of Dusseldorf, Germany, have invented certain new and useful Improvements in Street-Sweepers, of which the following is a specification.

This invention relates to a street-sweeper having a curved rotating broom which sweeps the dust upona pan, whence it is fed to a dust-car by means of a conveyer.

In the accompanying drawings, Figurel is, a longitudinal section of my improved streetsweeper, partly broken away; Fig..2,.a plan thereof, and Fig. 3 a detail'ofthe dust conveyer.

My improved street-sweeper is composed of a rotating cylindrical broom '10, attached to and surrounding the curved rear section of a flexible shaft The latteris mounted in suitable bearings carriedibylthefframe of the sweeper and is forwardly elongated, so as to form a ring or other similar endless curve, as shown in Fig. 2. The frontsectionv of the shaft w receives rotatorymotion in any suitable manneras,for instance, from a motor A-which rotates a crank-shafts by" means of a piston-rod k. The shaft afim parts motion to the flexible shaft to by chain b and chain-wheels t'and If, so that the curved broom receives a uniform rotatory motion.

In front of the broom at the middle of the sweeper there is arranged an inclined pan 5, upon which the dust gathered at the middle of the track is swept bythe broom. The pan 8 has a trough-shaped recess 3' communicating with the casing h of a" conveyer. The

dust is fed forwardalong'pan sand recess .9

and thence into casing h by means of rotatory blades or wings f, fast on shafts g, which carry chain-wheels m. The wings are flexible, so thatthey-"yield while passing'over pan s and recess s and will throw-the dust forward. The conveyor is composed ofa' series of buckets 71, attached to an endless chain 721*, which travels over a lower chain-wheel h 'and an 7 upper chain-wheel h The chainwheels'him m receive motion from shaft 10 by chain'o, sprocket-wheels r r, fast on shaft .91, chains 0, 0 anew. The dust delivered to the conveyer from pan 8 will berraised by broom having a continuous shaft to form a ring, a pan, rotatory blades engaging the pan, a conveyor, and means for rotating the broom and blades, substantially as specified.

Signed by me at Dusseldorf, Germany, this 5th day of February, 1902.

ALFRED FLECHTHEIM.

Witnesses:

WILLIAM EssEnwErN PETER LIEBER. 

